diff --git a/src/iomanip.cpp b/src/iomanip.cpp
index 185ff17..b403bbe 100644
--- a/src/iomanip.cpp
+++ b/src/iomanip.cpp
@@ -1,6 +1,8 @@
 #include "iomanip.hpp"
 #include <unistd.h>
 #include <cmath>
+#include <cstdlib>
+#include <string>
 
 using namespace sc::io;
 
@@ -8,7 +10,7 @@ static std::ostream& gray(std::ostream& out, int val, int code) {
     if (val < 0 || val > 23) {
         throw std::invalid_argument("gray value out of range");
     }
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[" << code << ";5;" << 232 + val << "m";
     return out;
 }
@@ -17,186 +19,192 @@ static std::ostream& rgb(std::ostream& out, int r, int g, int b, int code) {
     if (r < 0 || r > 5 || g < 0 || g > 5 || b < 0 || b > 5) {
         throw std::invalid_argument("rgb color component out of range");
     }
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[" << code << ";5;" << (16 + 36 * r + 6 * g + b) << "m";
     return out;
 }
 
+bool sc::io::should_color(const std::ostream& out) {
+    char* no_color_env {getenv("NO_COLOR")};
+    std::string no_color {no_color_env ? no_color_env : ""};
+    return no_color != "1" && isatty_ostream(out);
+}
+
 bool sc::io::isatty_ostream(const std::ostream& out) {
     return (&out == &std::cout && isatty(STDOUT_FILENO)) ||
         (&out == &std::cerr && isatty(STDERR_FILENO));
 }
 
 std::ostream& sc::io::hide_cursor(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[?25l";
     return out;
 }
 
 std::ostream& sc::io::show_cursor(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[?25h";
     return out;
 }
 
 std::ostream& sc::io::reset(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[m";
     return out;
 }
 
 std::ostream& sc::io::bold(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[1m";
     return out;
 }
 
 std::ostream& sc::io::italic(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[3m";
     return out;
 }
 
 std::ostream& sc::io::underline(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[4m";
     return out;
 }
 
 std::ostream& sc::io::overline(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[53m";
     return out;
 }
 
 std::ostream& sc::io::strikethru(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[9m";
     return out;
 }
 
 std::ostream& sc::io::blinkslow(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[5m";
     return out;
 }
 
 std::ostream& sc::io::blinkfast(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[6m";
     return out;
 }
 
 std::ostream& sc::io::reverse(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[7m";
     return out;
 }
 
 std::ostream& sc::io::blackf(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[30m";
     return out;
 }
 
 std::ostream& sc::io::redf(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[31m";
     return out;
 }
 
 std::ostream& sc::io::greenf(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[32m";
     return out;
 }
 
 std::ostream& sc::io::yellowf(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[33m";
     return out;
 }
 
 std::ostream& sc::io::bluef(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[34m";
     return out;
 }
 
 std::ostream& sc::io::magentaf(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[35m";
     return out;
 }
 
 std::ostream& sc::io::cyanf(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[36m";
     return out;
 }
 
 std::ostream& sc::io::whitef(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[37m";
     return out;
 }
 
 std::ostream& sc::io::defaultf(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[39m";
     return out;
 }
 
 std::ostream& sc::io::blackb(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[40m";
     return out;
 }
 
 std::ostream& sc::io::redb(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[41m";
     return out;
 }
 
 std::ostream& sc::io::greenb(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[42m";
     return out;
 }
 
 std::ostream& sc::io::yellowb(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[43m";
     return out;
 }
 
 std::ostream& sc::io::blueb(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[44m";
     return out;
 }
 
 std::ostream& sc::io::magentab(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[45m";
     return out;
 }
 
 std::ostream& sc::io::cyanb(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[46m";
     return out;
 }
 
 std::ostream& sc::io::whiteb(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[47m";
     return out;
 }
 
 std::ostream& sc::io::defaultb(std::ostream& out) {
-    if (isatty_ostream(out))
+    if (should_color(out))
         out << "\x1b[49m";
     return out;
 }
diff --git a/src/iomanip.hpp b/src/iomanip.hpp
index 0404b16..792bbac 100644
--- a/src/iomanip.hpp
+++ b/src/iomanip.hpp
@@ -5,6 +5,7 @@
 
 namespace sc {
     namespace io {
+        bool should_color(const std::ostream& out);
         bool isatty_ostream(const std::ostream& out);
 
         std::ostream& hide_cursor(std::ostream& out);